As SBS action drama “Agent Kim Reactivated” continues its ratings streak, renewed attention is also turning to one of its stars, Choi Dae-hoon, and his heartfelt love story with his wife, former actor and beauty queen Jang Yoon-seo. The Friday-Saturday series has quickly become one of Korea's biggest TV hits, surpassing 21 percent in nationwide viewership after just four episodes, according to Nielsen Korea. The drama follows an ordinary father who transforms into a dangerous fighter to rescue his daughter. Choi plays Sung Han-soo, a former Olympic taekwondo gold medalist and the longtime friend of the title character, played by So Ji-sub. Following his breakout popularity in last year's Netflix hit “When Life Gives You Tangerines,” Choi is once again drawing attention through “Agent Kim Reactivated.” As interest in the actor grows, fans have also begun revisiting his relationship with Jang, whom he married in 2015. The couple have one daughter. Choi debuted in the 2002 film “In The Jungle” and built his career through films, television dramas and theater productions. He